/*
 * Copyright (c) 2020 - present, Inspur Genersoft Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.inspur.edp.bef.core.session.distributed.common;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;

public class NoLock implements Lock {

  private static NoLock instance = new NoLock();

  public static NoLock getInstance() {
    return instance;
  }

  @Override
  public void lock() {
  }

  @Override
  public void lockInterruptibly() throws InterruptedException {
  }

  @Override
  public boolean tryLock() {
    return true;
  }

  @Override
  public boolean tryLock(long time, TimeUnit unit) throws InterruptedException {
    return true;
  }

  @Override
  public void unlock() {
  }

  @Override
  public Condition newCondition() {
    return null;
  }
}
